Abstract: A measuring system for measuring a mass flow rate, a density, a temperature or a flow velocity. The measuring system includes a main line, a first Coriolis measuring device arranged in the main line, a second Coriolis measuring device arranged in series with the first Coriolis measuring device in the main line, a bypass line which bypasses the second Coriolis measuring device, a first valve arranged in the bypass line, and a computing unit which is connected to the first Coriolis measuring device and to the second Coriolis measuring device. The first valve opens depending on a pressure. The first Coriolis measuring device is designed for a higher maximum flow rate than the second Coriolis measuring device.

Abstract: The present invention relates to a mold material mixture for producing moldings for the foundry industry, in particular for producing foundry molds, cores or feeders for the foundry industry, which comprises A) one or more pourable, refractory fillers, B) a binder system comprising i) formaldehyde, a formaldehyde donor and/or precondensates of formaldehyde and ii) an amino acid. The present invention additionally relates to the use of amino acids in a mold material mixture for producing moldings for the foundry industry or for producing moldings for the foundry industry, a process for producing a mold material mixture and a process for producing a molding for the foundry industry.

Abstract: A measuring system for measuring a mass flow rate, a density, a temperature or a flow velocity. The measuring system includes a main line, a first Coriolis measuring device arranged in the main line, a second Coriolis measuring device arranged in series with the first Coriolis measuring device in the main line, a bypass line which bypasses the second Coriolis measuring device, a first valve arranged in the bypass line, and a computing unit which is connected to the first Coriolis measuring device and to the second Coriolis measuring device. The first valve opens depending on a pressure. The first Coriolis measuring device is designed for a higher maximum flow rate than the second Coriolis measuring device.

Abstract: The present invention relates to a mold material mixture for producing moldings for the foundry industry, in particular for producing foundry molds, cores or feeders for the foundry industry, which comprises A) one or more pourable, refractory fillers, B) a binder system comprising i) formaldehyde, a formaldehyde donor and/or precondensates of formaldehyde and ii) an amino acid. The present invention additionally relates to the use of amino acids in a mold material mixture for producing moldings for the foundry industry or for producing moldings for the foundry industry, a process for producing a mold material mixture and a process for producing a molding for the foundry industry.

Abstract: A description is given of a two-component binder system for use in the polyurethane cold box process, a mixture for curing by contacting with a tertiary amine, a method for producing a feeder, a foundry mold or a foundry core, and also feeders, foundry molds and foundry cores producible by this method, and the use of a two-component binder system of the invention or of a mixture of the invention for binding a mold raw material or a mixture of mold raw materials in the polyurethane cold box process.